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/wp-admin/includes/update-core.php

https://github.com/flyingnn/yoTheme
PHP | 711 lines | 521 code | 43 blank | 147 comment | 53 complexity | bec2c7f51104b538b9a17d77bdce0edb MD5 | raw file
  1. <?php
  2. /**
  3. * WordPress core upgrade functionality.
  4. *
  5. * @package WordPress
  6. * @subpackage Administration
  7. * @since 2.7.0
  8. */
  9. /**
  10. * Stores files to be deleted.
  11. *
  12. * @since 2.7.0
  13. * @global array $_old_files
  14. * @var array
  15. * @name $_old_files
  16. */
  17. global $_old_files;
  18. $_old_files = array(
  19. // 2.0
  20. 'wp-admin/import-b2.php',
  21. 'wp-admin/import-blogger.php',
  22. 'wp-admin/import-greymatter.php',
  23. 'wp-admin/import-livejournal.php',
  24. 'wp-admin/import-mt.php',
  25. 'wp-admin/import-rss.php',
  26. 'wp-admin/import-textpattern.php',
  27. 'wp-admin/quicktags.js',
  28. 'wp-images/fade-butt.png',
  29. 'wp-images/get-firefox.png',
  30. 'wp-images/header-shadow.png',
  31. 'wp-images/smilies',
  32. 'wp-images/wp-small.png',
  33. 'wp-images/wpminilogo.png',
  34. 'wp.php',
  35. // 2.0.8
  36. 'wp-includes/js/tinymce/plugins/inlinepopups/readme.txt',
  37. // 2.1
  38. 'wp-admin/edit-form-ajax-cat.php',
  39. 'wp-admin/execute-pings.php',
  40. 'wp-admin/inline-uploading.php',
  41. 'wp-admin/link-categories.php',
  42. 'wp-admin/list-manipulation.js',
  43. 'wp-admin/list-manipulation.php',
  44. 'wp-includes/comment-functions.php',
  45. 'wp-includes/feed-functions.php',
  46. 'wp-includes/functions-compat.php',
  47. 'wp-includes/functions-formatting.php',
  48. 'wp-includes/functions-post.php',
  49. 'wp-includes/js/dbx-key.js',
  50. 'wp-includes/js/tinymce/plugins/autosave/langs/cs.js',
  51. 'wp-includes/js/tinymce/plugins/autosave/langs/sv.js',
  52. 'wp-includes/links.php',
  53. 'wp-includes/pluggable-functions.php',
  54. 'wp-includes/template-functions-author.php',
  55. 'wp-includes/template-functions-category.php',
  56. 'wp-includes/template-functions-general.php',
  57. 'wp-includes/template-functions-links.php',
  58. 'wp-includes/template-functions-post.php',
  59. 'wp-includes/wp-l10n.php',
  60. // 2.2
  61. 'wp-admin/cat-js.php',
  62. 'wp-admin/import/b2.php',
  63. 'wp-includes/js/autosave-js.php',
  64. 'wp-includes/js/list-manipulation-js.php',
  65. 'wp-includes/js/wp-ajax-js.php',
  66. // 2.3
  67. 'wp-admin/admin-db.php',
  68. 'wp-admin/cat.js',
  69. 'wp-admin/categories.js',
  70. 'wp-admin/custom-fields.js',
  71. 'wp-admin/dbx-admin-key.js',
  72. 'wp-admin/edit-comments.js',
  73. 'wp-admin/install-rtl.css',
  74. 'wp-admin/install.css',
  75. 'wp-admin/upgrade-schema.php',
  76. 'wp-admin/upload-functions.php',
  77. 'wp-admin/upload-rtl.css',
  78. 'wp-admin/upload.css',
  79. 'wp-admin/upload.js',
  80. 'wp-admin/users.js',
  81. 'wp-admin/widgets-rtl.css',
  82. 'wp-admin/widgets.css',
  83. 'wp-admin/xfn.js',
  84. 'wp-includes/js/tinymce/license.html',
  85. // 2.5
  86. 'wp-admin/css/upload.css',
  87. 'wp-admin/images/box-bg-left.gif',
  88. 'wp-admin/images/box-bg-right.gif',
  89. 'wp-admin/images/box-bg.gif',
  90. 'wp-admin/images/box-butt-left.gif',
  91. 'wp-admin/images/box-butt-right.gif',
  92. 'wp-admin/images/box-butt.gif',
  93. 'wp-admin/images/box-head-left.gif',
  94. 'wp-admin/images/box-head-right.gif',
  95. 'wp-admin/images/box-head.gif',
  96. 'wp-admin/images/heading-bg.gif',
  97. 'wp-admin/images/login-bkg-bottom.gif',
  98. 'wp-admin/images/login-bkg-tile.gif',
  99. 'wp-admin/images/notice.gif',
  100. 'wp-admin/images/toggle.gif',
  101. 'wp-admin/includes/upload.php',
  102. 'wp-admin/js/dbx-admin-key.js',
  103. 'wp-admin/js/link-cat.js',
  104. 'wp-admin/profile-update.php',
  105. 'wp-admin/templates.php',
  106. 'wp-includes/images/wlw/WpComments.png',
  107. 'wp-includes/images/wlw/WpIcon.png',
  108. 'wp-includes/images/wlw/WpWatermark.png',
  109. 'wp-includes/js/dbx.js',
  110. 'wp-includes/js/fat.js',
  111. 'wp-includes/js/list-manipulation.js',
  112. 'wp-includes/js/tinymce/langs/en.js',
  113. 'wp-includes/js/tinymce/plugins/autosave/editor_plugin_src.js',
  114. 'wp-includes/js/tinymce/plugins/autosave/langs',
  115. 'wp-includes/js/tinymce/plugins/directionality/images',
  116. 'wp-includes/js/tinymce/plugins/directionality/langs',
  117. 'wp-includes/js/tinymce/plugins/inlinepopups/css',
  118. 'wp-includes/js/tinymce/plugins/inlinepopups/images',
  119. 'wp-includes/js/tinymce/plugins/inlinepopups/jscripts',
  120. 'wp-includes/js/tinymce/plugins/paste/images',
  121. 'wp-includes/js/tinymce/plugins/paste/jscripts',
  122. 'wp-includes/js/tinymce/plugins/paste/langs',
  123. 'wp-includes/js/tinymce/plugins/spellchecker/classes/HttpClient.class.php',
  124. 'wp-includes/js/tinymce/plugins/spellchecker/classes/TinyGoogleSpell.class.php',
  125. 'wp-includes/js/tinymce/plugins/spellchecker/classes/TinyPspell.class.php',
  126. 'wp-includes/js/tinymce/plugins/spellchecker/classes/TinyPspellShell.class.php',
  127. 'wp-includes/js/tinymce/plugins/spellchecker/css/spellchecker.css',
  128. 'wp-includes/js/tinymce/plugins/spellchecker/images',
  129. 'wp-includes/js/tinymce/plugins/spellchecker/langs',
  130. 'wp-includes/js/tinymce/plugins/spellchecker/tinyspell.php',
  131. 'wp-includes/js/tinymce/plugins/wordpress/images',
  132. 'wp-includes/js/tinymce/plugins/wordpress/langs',
  133. 'wp-includes/js/tinymce/plugins/wordpress/wordpress.css',
  134. 'wp-includes/js/tinymce/plugins/wphelp',
  135. 'wp-includes/js/tinymce/themes/advanced/css',
  136. 'wp-includes/js/tinymce/themes/advanced/images',
  137. 'wp-includes/js/tinymce/themes/advanced/jscripts',
  138. 'wp-includes/js/tinymce/themes/advanced/langs',
  139. // 2.5.1
  140. 'wp-includes/js/tinymce/tiny_mce_gzip.php',
  141. // 2.6
  142. 'wp-admin/bookmarklet.php',
  143. 'wp-includes/js/jquery/jquery.dimensions.min.js',
  144. 'wp-includes/js/tinymce/plugins/wordpress/popups.css',
  145. 'wp-includes/js/wp-ajax.js',
  146. // 2.7
  147. 'wp-admin/css/press-this-ie-rtl.css',
  148. 'wp-admin/css/press-this-ie.css',
  149. 'wp-admin/css/upload-rtl.css',
  150. 'wp-admin/edit-form.php',
  151. 'wp-admin/images/comment-pill.gif',
  152. 'wp-admin/images/comment-stalk-classic.gif',
  153. 'wp-admin/images/comment-stalk-fresh.gif',
  154. 'wp-admin/images/comment-stalk-rtl.gif',
  155. 'wp-admin/images/del.png',
  156. 'wp-admin/images/gear.png',
  157. 'wp-admin/images/media-button-gallery.gif',
  158. 'wp-admin/images/media-buttons.gif',
  159. 'wp-admin/images/postbox-bg.gif',
  160. 'wp-admin/images/tab.png',
  161. 'wp-admin/images/tail.gif',
  162. 'wp-admin/js/forms.js',
  163. 'wp-admin/js/upload.js',
  164. 'wp-admin/link-import.php',
  165. 'wp-includes/images/audio.png',
  166. 'wp-includes/images/css.png',
  167. 'wp-includes/images/default.png',
  168. 'wp-includes/images/doc.png',
  169. 'wp-includes/images/exe.png',
  170. 'wp-includes/images/html.png',
  171. 'wp-includes/images/js.png',
  172. 'wp-includes/images/pdf.png',
  173. 'wp-includes/images/swf.png',
  174. 'wp-includes/images/tar.png',
  175. 'wp-includes/images/text.png',
  176. 'wp-includes/images/video.png',
  177. 'wp-includes/images/zip.png',
  178. 'wp-includes/js/tinymce/tiny_mce_config.php',
  179. 'wp-includes/js/tinymce/tiny_mce_ext.js',
  180. // 2.8
  181. 'wp-admin/js/users.js',
  182. 'wp-includes/js/swfupload/plugins/swfupload.documentready.js',
  183. 'wp-includes/js/swfupload/plugins/swfupload.graceful_degradation.js',
  184. 'wp-includes/js/swfupload/swfupload_f9.swf',
  185. 'wp-includes/js/tinymce/plugins/autosave',
  186. 'wp-includes/js/tinymce/plugins/paste/css',
  187. 'wp-includes/js/tinymce/utils/mclayer.js',
  188. 'wp-includes/js/tinymce/wordpress.css',
  189. // 2.8.5
  190. 'wp-admin/import/btt.php',
  191. 'wp-admin/import/jkw.php',
  192. // 2.9
  193. 'wp-admin/js/page.dev.js',
  194. 'wp-admin/js/page.js',
  195. 'wp-admin/js/set-post-thumbnail-handler.dev.js',
  196. 'wp-admin/js/set-post-thumbnail-handler.js',
  197. 'wp-admin/js/slug.dev.js',
  198. 'wp-admin/js/slug.js',
  199. 'wp-includes/gettext.php',
  200. 'wp-includes/js/tinymce/plugins/wordpress/js',
  201. 'wp-includes/streams.php',
  202. // MU
  203. 'README.txt',
  204. 'htaccess.dist',
  205. 'index-install.php',
  206. 'wp-admin/css/mu-rtl.css',
  207. 'wp-admin/css/mu.css',
  208. 'wp-admin/images/site-admin.png',
  209. 'wp-admin/includes/mu.php',
  210. 'wp-admin/wpmu-admin.php',
  211. 'wp-admin/wpmu-blogs.php',
  212. 'wp-admin/wpmu-edit.php',
  213. 'wp-admin/wpmu-options.php',
  214. 'wp-admin/wpmu-themes.php',
  215. 'wp-admin/wpmu-upgrade-site.php',
  216. 'wp-admin/wpmu-users.php',
  217. 'wp-includes/images/wordpress-mu.png',
  218. 'wp-includes/wpmu-default-filters.php',
  219. 'wp-includes/wpmu-functions.php',
  220. 'wpmu-settings.php',
  221. // 3.0
  222. 'wp-admin/categories.php',
  223. 'wp-admin/edit-category-form.php',
  224. 'wp-admin/edit-page-form.php',
  225. 'wp-admin/edit-pages.php',
  226. 'wp-admin/images/admin-header-footer.png',
  227. 'wp-admin/images/browse-happy.gif',
  228. 'wp-admin/images/ico-add.png',
  229. 'wp-admin/images/ico-close.png',
  230. 'wp-admin/images/ico-edit.png',
  231. 'wp-admin/images/ico-viewpage.png',
  232. 'wp-admin/images/fav-top.png',
  233. 'wp-admin/images/screen-options-left.gif',
  234. 'wp-admin/images/wp-logo-vs.gif',
  235. 'wp-admin/images/wp-logo.gif',
  236. 'wp-admin/import',
  237. 'wp-admin/js/wp-gears.dev.js',
  238. 'wp-admin/js/wp-gears.js',
  239. 'wp-admin/options-misc.php',
  240. 'wp-admin/page-new.php',
  241. 'wp-admin/page.php',
  242. 'wp-admin/rtl.css',
  243. 'wp-admin/rtl.dev.css',
  244. 'wp-admin/update-links.php',
  245. 'wp-admin/wp-admin.css',
  246. 'wp-admin/wp-admin.dev.css',
  247. 'wp-includes/js/codepress',
  248. 'wp-includes/js/codepress/engines/khtml.js',
  249. 'wp-includes/js/codepress/engines/older.js',
  250. 'wp-includes/js/jquery/autocomplete.dev.js',
  251. 'wp-includes/js/jquery/autocomplete.js',
  252. 'wp-includes/js/jquery/interface.js',
  253. 'wp-includes/js/scriptaculous/prototype.js',
  254. 'wp-includes/js/tinymce/wp-tinymce.js',
  255. // 3.1
  256. 'wp-admin/edit-attachment-rows.php',
  257. 'wp-admin/edit-link-categories.php',
  258. 'wp-admin/edit-link-category-form.php',
  259. 'wp-admin/edit-post-rows.php',
  260. 'wp-admin/images/button-grad-active-vs.png',
  261. 'wp-admin/images/button-grad-vs.png',
  262. 'wp-admin/images/fav-arrow-vs-rtl.gif',
  263. 'wp-admin/images/fav-arrow-vs.gif',
  264. 'wp-admin/images/fav-top-vs.gif',
  265. 'wp-admin/images/list-vs.png',
  266. 'wp-admin/images/screen-options-right-up.gif',
  267. 'wp-admin/images/screen-options-right.gif',
  268. 'wp-admin/images/visit-site-button-grad-vs.gif',
  269. 'wp-admin/images/visit-site-button-grad.gif',
  270. 'wp-admin/link-category.php',
  271. 'wp-admin/sidebar.php',
  272. 'wp-includes/classes.php',
  273. 'wp-includes/js/tinymce/blank.htm',
  274. 'wp-includes/js/tinymce/plugins/media/css/content.css',
  275. 'wp-includes/js/tinymce/plugins/media/img',
  276. 'wp-includes/js/tinymce/plugins/safari',
  277. // 3.2
  278. 'wp-admin/images/logo-login.gif',
  279. 'wp-admin/images/star.gif',
  280. 'wp-admin/js/list-table.dev.js',
  281. 'wp-admin/js/list-table.js',
  282. 'wp-includes/default-embeds.php',
  283. 'wp-includes/js/tinymce/plugins/wordpress/img/help.gif',
  284. 'wp-includes/js/tinymce/plugins/wordpress/img/more.gif',
  285. 'wp-includes/js/tinymce/plugins/wordpress/img/toolbars.gif',
  286. 'wp-includes/js/tinymce/themes/advanced/img/fm.gif',
  287. 'wp-includes/js/tinymce/themes/advanced/img/sflogo.png',
  288. // 3.3
  289. 'wp-admin/css/colors-classic-rtl.css',
  290. 'wp-admin/css/colors-classic-rtl.dev.css',
  291. 'wp-admin/css/colors-fresh-rtl.css',
  292. 'wp-admin/css/colors-fresh-rtl.dev.css',
  293. 'wp-admin/css/dashboard-rtl.css',
  294. 'wp-admin/css/dashboard-rtl.dev.css',
  295. 'wp-admin/css/dashboard.css',
  296. 'wp-admin/css/dashboard.dev.css',
  297. 'wp-admin/css/farbtastic-rtl.css',
  298. 'wp-admin/css/global-rtl.css',
  299. 'wp-admin/css/global-rtl.dev.css',
  300. 'wp-admin/css/global.css',
  301. 'wp-admin/css/global.dev.css',
  302. 'wp-admin/css/install-rtl.css',
  303. 'wp-admin/css/install-rtl.dev.css',
  304. 'wp-admin/css/login-rtl.css',
  305. 'wp-admin/css/login-rtl.dev.css',
  306. 'wp-admin/css/login.css',
  307. 'wp-admin/css/login.dev.css',
  308. 'wp-admin/css/ms.css',
  309. 'wp-admin/css/ms.dev.css',
  310. 'wp-admin/css/nav-menu-rtl.css',
  311. 'wp-admin/css/nav-menu-rtl.dev.css',
  312. 'wp-admin/css/nav-menu.css',
  313. 'wp-admin/css/nav-menu.dev.css',
  314. 'wp-admin/css/plugin-install-rtl.css',
  315. 'wp-admin/css/plugin-install-rtl.dev.css',
  316. 'wp-admin/css/plugin-install.css',
  317. 'wp-admin/css/plugin-install.dev.css',
  318. 'wp-admin/css/press-this-rtl.css',
  319. 'wp-admin/css/press-this-rtl.dev.css',
  320. 'wp-admin/css/press-this.css',
  321. 'wp-admin/css/press-this.dev.css',
  322. 'wp-admin/css/theme-editor-rtl.css',
  323. 'wp-admin/css/theme-editor-rtl.dev.css',
  324. 'wp-admin/css/theme-editor.css',
  325. 'wp-admin/css/theme-editor.dev.css',
  326. 'wp-admin/css/theme-install-rtl.css',
  327. 'wp-admin/css/theme-install-rtl.dev.css',
  328. 'wp-admin/css/theme-install.css',
  329. 'wp-admin/css/theme-install.dev.css',
  330. 'wp-admin/css/widgets-rtl.css',
  331. 'wp-admin/css/widgets-rtl.dev.css',
  332. 'wp-admin/css/widgets.css',
  333. 'wp-admin/css/widgets.dev.css',
  334. 'wp-admin/includes/internal-linking.php',
  335. 'wp-includes/images/admin-bar-sprite-rtl.png',
  336. 'wp-includes/js/jquery/ui.button.js',
  337. 'wp-includes/js/jquery/ui.core.js',
  338. 'wp-includes/js/jquery/ui.dialog.js',
  339. 'wp-includes/js/jquery/ui.draggable.js',
  340. 'wp-includes/js/jquery/ui.droppable.js',
  341. 'wp-includes/js/jquery/ui.mouse.js',
  342. 'wp-includes/js/jquery/ui.position.js',
  343. 'wp-includes/js/jquery/ui.resizable.js',
  344. 'wp-includes/js/jquery/ui.selectable.js',
  345. 'wp-includes/js/jquery/ui.sortable.js',
  346. 'wp-includes/js/jquery/ui.tabs.js',
  347. 'wp-includes/js/jquery/ui.widget.js',
  348. 'wp-includes/js/l10n.dev.js',
  349. 'wp-includes/js/l10n.js',
  350. 'wp-includes/js/tinymce/plugins/wplink/css',
  351. 'wp-includes/js/tinymce/plugins/wplink/img',
  352. 'wp-includes/js/tinymce/plugins/wplink/js',
  353. 'wp-includes/js/tinymce/themes/advanced/img/wpicons.png',
  354. 'wp-includes/js/tinymce/themes/advanced/skins/wp_theme/img/butt2.png',
  355. 'wp-includes/js/tinymce/themes/advanced/skins/wp_theme/img/button_bg.png',
  356. 'wp-includes/js/tinymce/themes/advanced/skins/wp_theme/img/down_arrow.gif',
  357. 'wp-includes/js/tinymce/themes/advanced/skins/wp_theme/img/fade-butt.png',
  358. 'wp-includes/js/tinymce/themes/advanced/skins/wp_theme/img/separator.gif',
  359. // Don't delete, yet: 'wp-rss.php',
  360. // Don't delete, yet: 'wp-rdf.php',
  361. // Don't delete, yet: 'wp-rss2.php',
  362. // Don't delete, yet: 'wp-commentsrss2.php',
  363. // Don't delete, yet: 'wp-atom.php',
  364. // Don't delete, yet: 'wp-feed.php',
  365. // 3.4
  366. 'wp-admin/images/gray-star.png',
  367. 'wp-admin/images/logo-login.png',
  368. 'wp-admin/images/star.png',
  369. 'wp-admin/index-extra.php',
  370. 'wp-admin/network/index-extra.php',
  371. 'wp-admin/user/index-extra.php',
  372. 'wp-admin/images/screenshots/admin-flyouts.png',
  373. 'wp-admin/images/screenshots/coediting.png',
  374. 'wp-admin/images/screenshots/drag-and-drop.png',
  375. 'wp-admin/images/screenshots/help-screen.png',
  376. 'wp-admin/images/screenshots/media-icon.png',
  377. 'wp-admin/images/screenshots/new-feature-pointer.png',
  378. 'wp-admin/images/screenshots/welcome-screen.png',
  379. 'wp-includes/css/editor-buttons.css',
  380. 'wp-includes/css/editor-buttons.dev.css',
  381. 'wp-includes/js/tinymce/plugins/paste/blank.htm',
  382. 'wp-includes/js/tinymce/plugins/wordpress/css',
  383. 'wp-includes/js/tinymce/plugins/wordpress/editor_plugin.dev.js',
  384. 'wp-includes/js/tinymce/plugins/wordpress/img/embedded.png',
  385. 'wp-includes/js/tinymce/plugins/wordpress/img/more_bug.gif',
  386. 'wp-includes/js/tinymce/plugins/wordpress/img/page_bug.gif',
  387. 'wp-includes/js/tinymce/plugins/wpdialogs/editor_plugin.dev.js',
  388. 'wp-includes/js/tinymce/plugins/wpeditimage/css/editimage-rtl.css',
  389. 'wp-includes/js/tinymce/plugins/wpeditimage/editor_plugin.dev.js',
  390. 'wp-includes/js/tinymce/plugins/wpfullscreen/editor_plugin.dev.js',
  391. 'wp-includes/js/tinymce/plugins/wpgallery/editor_plugin.dev.js',
  392. 'wp-includes/js/tinymce/plugins/wpgallery/img/gallery.png',
  393. 'wp-includes/js/tinymce/plugins/wplink/editor_plugin.dev.js',
  394. // Don't delete, yet: 'wp-pass.php',
  395. // Don't delete, yet: 'wp-register.php',
  396. );
  397. /**
  398. * Stores new files in wp-content to copy
  399. *
  400. * The contents of this array indicate any new bundled plugins/themes which
  401. * should be installed with the WordPress Upgrade. These items will not be
  402. * re-installed in future upgrades, this behaviour is controlled by the
  403. * introduced version present here being older than the current installed version.
  404. *
  405. * The content of this array should follow the following format:
  406. * Filename (relative to wp-content) => Introduced version
  407. * Directories should be noted by suffixing it with a trailing slash (/)
  408. *
  409. * @since 3.2.0
  410. * @global array $_new_bundled_files
  411. * @var array
  412. * @name $_new_bundled_files
  413. */
  414. global $_new_bundled_files;
  415. $_new_bundled_files = array(
  416. 'plugins/akismet/' => '2.0',
  417. 'themes/twentyten/' => '3.0',
  418. 'themes/twentyeleven/' => '3.2'
  419. );
  420. /**
  421. * Upgrade the core of WordPress.
  422. *
  423. * This will create a .maintenance file at the base of the WordPress directory
  424. * to ensure that people can not access the web site, when the files are being
  425. * copied to their locations.
  426. *
  427. * The files in the {@link $_old_files} list will be removed and the new files
  428. * copied from the zip file after the database is upgraded.
  429. *
  430. * The files in the {@link $_new_bundled_files} list will be added to the installation
  431. * if the version is greater than or equal to the old version being upgraded.
  432. *
  433. * The steps for the upgrader for after the new release is downloaded and
  434. * unzipped is:
  435. * 1. Test unzipped location for select files to ensure that unzipped worked.
  436. * 2. Create the .maintenance file in current WordPress base.
  437. * 3. Copy new WordPress directory over old WordPress files.
  438. * 4. Upgrade WordPress to new version.
  439. * 4.1. Copy all files/folders other than wp-content
  440. * 4.2. Copy any language files to WP_LANG_DIR (which may differ from WP_CONTENT_DIR
  441. * 4.3. Copy any new bundled themes/plugins to their respective locations
  442. * 5. Delete new WordPress directory path.
  443. * 6. Delete .maintenance file.
  444. * 7. Remove old files.
  445. * 8. Delete 'update_core' option.
  446. *
  447. * There are several areas of failure. For instance if PHP times out before step
  448. * 6, then you will not be able to access any portion of your site. Also, since
  449. * the upgrade will not continue where it left off, you will not be able to
  450. * automatically remove old files and remove the 'update_core' option. This
  451. * isn't that bad.
  452. *
  453. * If the copy of the new WordPress over the old fails, then the worse is that
  454. * the new WordPress directory will remain.
  455. *
  456. * If it is assumed that every file will be copied over, including plugins and
  457. * themes, then if you edit the default theme, you should rename it, so that
  458. * your changes remain.
  459. *
  460. * @since 2.7.0
  461. *
  462. * @param string $from New release unzipped path.
  463. * @param string $to Path to old WordPress installation.
  464. * @return WP_Error|null WP_Error on failure, null on success.
  465. */
  466. function update_core($from, $to) {
  467. global $wp_filesystem, $_old_files, $_new_bundled_files, $wpdb;
  468. @set_time_limit( 300 );
  469. $php_version = phpversion();
  470. $mysql_version = $wpdb->db_version();
  471. $required_php_version = '5.2.4';
  472. $required_mysql_version = '5.0';
  473. $wp_version = '3.4.1';
  474. $php_compat = version_compare( $php_version, $required_php_version, '>=' );
  475. if ( file_exists( WP_CONTENT_DIR . '/db.php' ) && empty( $wpdb->is_mysql ) )
  476. $mysql_compat = true;
  477. else
  478. $mysql_compat = version_compare( $mysql_version, $required_mysql_version, '>=' );
  479. if ( !$mysql_compat || !$php_compat )
  480. $wp_filesystem->delete($from, true);
  481. if ( !$mysql_compat && !$php_compat )
  482. return new WP_Error( 'php_mysql_not_compatible', sprintf( __('The update cannot be installed because WordPress %1$s requires PHP version %2$s or higher and MySQL version %3$s or higher. You are running PHP version %4$s and MySQL version %5$s.'), $wp_version, $required_php_version, $required_mysql_version, $php_version, $mysql_version ) );
  483. elseif ( !$php_compat )
  484. return new WP_Error( 'php_not_compatible', sprintf( __('The update cannot be installed because WordPress %1$s requires PHP version %2$s or higher. You are running version %3$s.'), $wp_version, $required_php_version, $php_version ) );
  485. elseif ( !$mysql_compat )
  486. return new WP_Error( 'mysql_not_compatible', sprintf( __('The update cannot be installed because WordPress %1$s requires MySQL version %2$s or higher. You are running version %3$s.'), $wp_version, $required_mysql_version, $mysql_version ) );
  487. // Sanity check the unzipped distribution
  488. apply_filters('update_feedback', __('Verifying the unpacked files&#8230;'));
  489. $distro = '';
  490. $roots = array( '/wordpress/', '/wordpress-mu/' );
  491. foreach( $roots as $root ) {
  492. if ( $wp_filesystem->exists($from . $root . 'readme.html') && $wp_filesystem->exists($from . $root . 'wp-includes/version.php') ) {
  493. $distro = $root;
  494. break;
  495. }
  496. }
  497. if ( !$distro ) {
  498. $wp_filesystem->delete($from, true);
  499. return new WP_Error('insane_distro', __('The update could not be unpacked') );
  500. }
  501. apply_filters('update_feedback', __('Installing the latest version&#8230;'));
  502. // Create maintenance file to signal that we are upgrading
  503. $maintenance_string = '<?php $upgrading = ' . time() . '; ?>';
  504. $maintenance_file = $to . '.maintenance';
  505. $wp_filesystem->delete($maintenance_file);
  506. $wp_filesystem->put_contents($maintenance_file, $maintenance_string, FS_CHMOD_FILE);
  507. // Copy new versions of WP files into place.
  508. $result = _copy_dir($from . $distro, $to, array('wp-content') );
  509. // Custom Content Directory needs updating now.
  510. // Copy Languages
  511. if ( !is_wp_error($result) && $wp_filesystem->is_dir($from . $distro . 'wp-content/languages') ) {
  512. if ( WP_LANG_DIR != ABSPATH . WPINC . '/languages' || @is_dir(WP_LANG_DIR) )
  513. $lang_dir = WP_LANG_DIR;
  514. else
  515. $lang_dir = WP_CONTENT_DIR . '/languages';
  516. if ( !@is_dir($lang_dir) && 0 === strpos($lang_dir, ABSPATH) ) { // Check the language directory exists first
  517. $wp_filesystem->mkdir($to . str_replace(ABSPATH, '', $lang_dir), FS_CHMOD_DIR); // If it's within the ABSPATH we can handle it here, otherwise they're out of luck.
  518. clearstatcache(); // for FTP, Need to clear the stat cache
  519. }
  520. if ( @is_dir($lang_dir) ) {
  521. $wp_lang_dir = $wp_filesystem->find_folder($lang_dir);
  522. if ( $wp_lang_dir )
  523. $result = copy_dir($from . $distro . 'wp-content/languages/', $wp_lang_dir);
  524. }
  525. }
  526. // Copy New bundled plugins & themes
  527. // This gives us the ability to install new plugins & themes bundled with future versions of WordPress whilst avoiding the re-install upon upgrade issue.
  528. if ( !is_wp_error($result) && ( ! defined('CORE_UPGRADE_SKIP_NEW_BUNDLED') || ! CORE_UPGRADE_SKIP_NEW_BUNDLED ) ) {
  529. $old_version = $GLOBALS['wp_version']; // $wp_version in local scope == new version
  530. foreach ( (array) $_new_bundled_files as $file => $introduced_version ) {
  531. // If $introduced version is greater than what the site was previously running
  532. if ( version_compare($introduced_version, $old_version, '>') ) {
  533. $directory = ('/' == $file[ strlen($file)-1 ]);
  534. list($type, $filename) = explode('/', $file, 2);
  535. if ( 'plugins' == $type )
  536. $dest = $wp_filesystem->wp_plugins_dir();
  537. elseif ( 'themes' == $type )
  538. $dest = trailingslashit($wp_filesystem->wp_themes_dir()); // Back-compat, ::wp_themes_dir() did not return trailingslash'd pre-3.2
  539. else
  540. continue;
  541. if ( ! $directory ) {
  542. if ( $wp_filesystem->exists($dest . $filename) )
  543. continue;
  544. if ( ! $wp_filesystem->copy($from . $distro . 'wp-content/' . $file, $dest . $filename, FS_CHMOD_FILE) )
  545. $result = new WP_Error('copy_failed', __('Could not copy file.'), $dest . $filename);
  546. } else {
  547. if ( $wp_filesystem->is_dir($dest . $filename) )
  548. continue;
  549. $wp_filesystem->mkdir($dest . $filename, FS_CHMOD_DIR);
  550. $_result = copy_dir( $from . $distro . 'wp-content/' . $file, $dest . $filename);
  551. if ( is_wp_error($_result) ) //If a error occurs partway through this final step, keep the error flowing through, but keep process going.
  552. $result = $_result;
  553. }
  554. }
  555. } //end foreach
  556. }
  557. // Handle $result error from the above blocks
  558. if ( is_wp_error($result) ) {
  559. $wp_filesystem->delete($maintenance_file);
  560. $wp_filesystem->delete($from, true);
  561. return $result;
  562. }
  563. // Remove old files
  564. foreach ( $_old_files as $old_file ) {
  565. $old_file = $to . $old_file;
  566. if ( !$wp_filesystem->exists($old_file) )
  567. continue;
  568. $wp_filesystem->delete($old_file, true);
  569. }
  570. // Upgrade DB with separate request
  571. apply_filters('update_feedback', __('Upgrading database&#8230;'));
  572. $db_upgrade_url = admin_url('upgrade.php?step=upgrade_db');
  573. wp_remote_post($db_upgrade_url, array('timeout' => 60));
  574. // Remove working directory
  575. $wp_filesystem->delete($from, true);
  576. // Force refresh of update information
  577. if ( function_exists('delete_site_transient') )
  578. delete_site_transient('update_core');
  579. else
  580. delete_option('update_core');
  581. // Remove maintenance file, we're done.
  582. $wp_filesystem->delete($maintenance_file);
  583. // If we made it this far:
  584. do_action( '_core_updated_successfully', $wp_version );
  585. return $wp_version;
  586. }
  587. /**
  588. * Copies a directory from one location to another via the WordPress Filesystem Abstraction.
  589. * Assumes that WP_Filesystem() has already been called and setup.
  590. *
  591. * This is a temporary function for the 3.1 -> 3.2 upgrade only and will be removed in 3.3
  592. *
  593. * @ignore
  594. * @since 3.2.0
  595. * @see copy_dir()
  596. *
  597. * @param string $from source directory
  598. * @param string $to destination directory
  599. * @param array $skip_list a list of files/folders to skip copying
  600. * @return mixed WP_Error on failure, True on success.
  601. */
  602. function _copy_dir($from, $to, $skip_list = array() ) {
  603. global $wp_filesystem;
  604. $dirlist = $wp_filesystem->dirlist($from);
  605. $from = trailingslashit($from);
  606. $to = trailingslashit($to);
  607. $skip_regex = '';
  608. foreach ( (array)$skip_list as $key => $skip_file )
  609. $skip_regex .= preg_quote($skip_file, '!') . '|';
  610. if ( !empty($skip_regex) )
  611. $skip_regex = '!(' . rtrim($skip_regex, '|') . ')$!i';
  612. foreach ( (array) $dirlist as $filename => $fileinfo ) {
  613. if ( !empty($skip_regex) )
  614. if ( preg_match($skip_regex, $from . $filename) )
  615. continue;
  616. if ( 'f' == $fileinfo['type'] ) {
  617. if ( ! $wp_filesystem->copy($from . $filename, $to . $filename, true, FS_CHMOD_FILE) ) {
  618. // If copy failed, chmod file to 0644 and try again.
  619. $wp_filesystem->chmod($to . $filename, 0644);
  620. if ( ! $wp_filesystem->copy($from . $filename, $to . $filename, true, FS_CHMOD_FILE) )
  621. return new WP_Error('copy_failed', __('Could not copy file.'), $to . $filename);
  622. }
  623. } elseif ( 'd' == $fileinfo['type'] ) {
  624. if ( !$wp_filesystem->is_dir($to . $filename) ) {
  625. if ( !$wp_filesystem->mkdir($to . $filename, FS_CHMOD_DIR) )
  626. return new WP_Error('mkdir_failed', __('Could not create directory.'), $to . $filename);
  627. }
  628. $result = _copy_dir($from . $filename, $to . $filename, $skip_list);
  629. if ( is_wp_error($result) )
  630. return $result;
  631. }
  632. }
  633. return true;
  634. }
  635. /**
  636. * Redirect to the About WordPress page after a successful upgrade.
  637. *
  638. * This function is only needed when the existing install is older than 3.4.0.
  639. *
  640. * @since 3.3.0
  641. *
  642. */
  643. function _redirect_to_about_wordpress( $new_version ) {
  644. global $wp_version, $pagenow, $action;
  645. if ( version_compare( $wp_version, '3.4-RC1', '>=' ) )
  646. return;
  647. // Ensure we only run this on the update-core.php page. wp_update_core() could be called in other contexts.
  648. if ( 'update-core.php' != $pagenow )
  649. return;
  650. if ( 'do-core-upgrade' != $action && 'do-core-reinstall' != $action )
  651. return;
  652. // Load the updated default text localization domain for new strings
  653. load_default_textdomain();
  654. // See do_core_upgrade()
  655. show_message( __('WordPress updated successfully') );
  656. show_message( '<span class="hide-if-no-js">' . sprintf( __( 'Welcome to WordPress %1$s. You will be redirected to the About WordPress screen. If not, click <a href="%s">here</a>.' ), $new_version, esc_url( self_admin_url( 'about.php?updated' ) ) ) . '</span>' );
  657. show_message( '<span class="hide-if-js">' . sprintf( __( 'Welcome to WordPress %1$s. <a href="%2$s">Learn more</a>.' ), $new_version, esc_url( self_admin_url( 'about.php?updated' ) ) ) . '</span>' );
  658. echo '</div>';
  659. ?>
  660. <script type="text/javascript">
  661. window.location = '<?php echo self_admin_url( 'about.php?updated' ); ?>';
  662. </script>
  663. <?php
  664. // Include admin-footer.php and exit
  665. include(ABSPATH . 'wp-admin/admin-footer.php');
  666. exit();
  667. }
  668. add_action( '_core_updated_successfully', '_redirect_to_about_wordpress' );